EVERETT F. PHILLIPS. 



HOOKS ON HIND WING. 



Drones. 



Workers. 



Workers. 



possibly a very few in the corners of the frame or near the top 

 bar of the frame since all the combs were made on what bee- 

 keepers call foundation and the cells were uniformly of worker 

 size. These drones show the least variation since they were all 

 hatched under the same conditions." Even if we add the prob- 

 able error to the standard deviation of workers and subtract it 

 from that of the drones this result holds except in lots II. and 

 IV. and it would seem that from these figures (made by Mr. 

 Lutz himself) that our results are most strongly confirmed. 



The additional criticism is made that we lumped the different 

 lots together because they seemed to be alike " when really their 

 only claim to homogeneity is that they are of the same sex and 

 all bees -- Italians, hybrids, 'peculiar strains,' et al., from central 

 Ohio to eastern Pennsylvania being jumbled together." This 



1 In discussing the average standard deviation of this table Mr. Lutz takes the 

 average of the probable error for the lots of 50 and 100 without taking into considera- 

 tion that the probable error should be smaller for 500 than for these lots. Surely 

 since all the lots show the same greater variability of the drones (except lot II. as ex- 

 plained later) the probable error is considerably smaller than that given by Mr. Lutz. 



